Re: [PATCH block/for-linus] writeback: fix syncing of I_DIRTY_TIME inodes
From: Eryu Guan
Date: Fri Aug 21 2015 - 06:21:03 EST
On Wed, Aug 19, 2015 at 07:56:11AM +1000, Dave Chinner wrote:
> On Tue, Aug 18, 2015 at 12:54:39PM -0700, Tejun Heo wrote:
[snip]
>
> I'd suggest looking at some of the XFS tracepoints during the test:
>
> tracepoint trigger
> xfs_file_buffered_write once per write syscall
> xfs_file_sync once per fsync per inode
> xfs_vm_writepage every ->writepage call
> xfs_setfilesize every IO completion that updates inode size
>
> And it's probably best to also include all the writeback
> tracepoints, too, for context. That will tell you what inodes and
> what part of them are getting written back and when....
I finally reproduced generic/048 with both xfs and writeback tracepoints
enabled, please download the trace dat file and trace report file from
http://128.199.137.77/writeback/
Thanks,
Eryu
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